Lenze E84Dxxxxx - Manual (Page 28)

3 Safe configuration
3.5 Safety functions
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Lenze · 8400 protec · Drive-based safety · Software Manual · DMS 2.4 EN · 05/2013 · TD05
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3.5.1.2 Restart behaviour
The restart behaviour of the drive after a stop function has been executed can be set via the
following parameters:
• "Restart behaviour - STO, SS1" ( C15300/1 )
Restart behaviour in case of setting "Acknowledged restart"
• After a standard stop the restart must be acknowledged (AIS) via terminal or safety bus.
• After an error stop, the error must be acknowledged first (AIE), before the restart is
acknowledged with AIS.
Restart behaviour in case of setting "Automatic restart"
The higher-level control must ensure that the drive only restarts after an acknowledgement. The
stop status of the drive is reported to the higher-level control via bit STO.

Danger!
If the request for the safety function is cancelled, the drive can restart automatically.
In case of an automatic restart, you have to provide external measures which ensure
that the drive only restarts after a confirmation (EN 60204).
Acknowledgement via terminal via safety bus
AIS (Positive signal pulse with a signal duration
of 0.3 ... 10 s
PROFIsafe bit "PS_AIS"
 Safety bus ( 33)
AIE (Positive signal pulse with a signal duration
of 0.3 ... 10 s)
PROFIsafe bit "PS_AIE"
 Safety bus ( 33)

Note!
The restart behaviour after an emergency stop corresponds to the restart behaviour
parameterised for the STO/SS1 stop function.